Contact Us

Email:[email protected]

Phone :+86 15962807500

Add :CBD, Nantong , JiangSu, China

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TDC Duct Corner Punching Line



Payment: 30% down payment by T/T,the balance down before shipment.

Lead time: witin 10-35 days after receiving down payment.

Guarantee: within one year since date of B/L.



  • Specification

This line is designed for sheet metal forming and blanking purpose with automatic work.

I Production flow: 

Decoiling and straightening machine → Roller feeding device → punching machine

II Technical data 

Material: Steel plate in coil

Available external diameter: Ф1200mm

Available interior diameter: Ф508±10mm

Width of steel strip: 150mm

Thickness of steel strip: 1.5-2.0 mm

Weight of coil: 500 kg

Work speed: 45pieces/min

Power: 380V±10%

Air pressure: 0.5Mpa


2.1 Decoiling and straightening machine 

The Decoiling machine is mechanical expansion type with passive driven, work with straightening machine which is active driven machine by motor.

Main technical data

Model: BML-150

Max. Sheet width: 150mm

Sheet thickness: 0.5-3.0mm

Inner diameter of coil: 450-530mm

Outer diameter of coil: max. 1200mm

Max. coil weight: 500kg

Feeding roller size: 60mm x 2pieces + 80mm x 2pieces

Straightening roller size: 50mm x 7pieces

Expansion: manually expanded by handle

Reducer ratio: 1/30

Driving motor power: 1.5kW

2.2 Automatic roller feeding device 

The automatic roller feeding device is connected punch press by draw bar, the feeding speed match up with press well.

Model: BRF-2010NS

Suitable coil width: 200mm

Suitable material thickness: max.3.5mm

Feeding length: 100mm

Feeding speed: same as punching speed.

Feeding precision: +/- 0.2mm

Weight: 155kg

2.3 Punching machine 

Type: JD21-80A

Nominal force: 800kN

Stroke under nominal force: 9mm

Slide stroke: 130mm

Stroke frequency: 45times/min

Max die set height: 320mm

Adjustment of die height: 100mm

Distance between slide block center to the frame: 300mm

Dimension of worktable: 580 x 860mm (F-B x L-R)

Thickness of worktable: 100mm

Dimension of hole on worktable: Φ280 x 220 x Φ380mm (upper diameter x deepness x lower diameter)

Dimension of slide block bottom surface: 280 x 380mm

Tool shank: 60mm x 75mm (diameter x depth)

Distance between columns: 410mm

Motor power: 7.5kW

Dimension: 1925mm x 1470mm x 2675mm

Weight: 5200kg